Demountable vehicle-rim.



extra wheel to be carried,

CHARLES B. LASTRETO, 0F OAKLAND, CALIFORNIA.

DEMOUNTABLE VEHICLE-RIM.

Specification of Letters Patent.

Application filed November 22, 1909.

Patented Apr. 4, 1911. Serial No. 529,261. I

T 0 all whom it may concern:

Be itknown that I, CHARLES B. Las'rnn'ro, a citizen of the UnitedStates, residing at 'Oakland, in the county of Alameda and.

automobiles, it is common either to use socalled separable rims, 0r rimshaving a section which can be taken off by loosening a series of boltsand clamps, so as to enable the tireto be removed and a new one put onor replaced; or in place of the detachable tire, it is common to employa eompletely set-up extra whee] having the tire in place and pumped up,which extra wheel is carried on the machine. and in case any thing goeswrong with one of the running Wheels, the injured member is removed andthe new one put on. This latter method is an expensive one, as itrequires a complete WllllO- the former method of employing a so-callcdseparable rim is slow and tedious, and it is often very hard indeed toget a tire oil when out on the road, and especially at night.

The object of my invention is to provide a demountable rim, or a rimwhich can be taken ofii in its entirety quickly and readily fromthelwhecl, and another rim having a complete tire in place alreadypumped up to put on to the wheel. In other Words, in-

stead of carrying a complete extra -wheel with tire, all I need to carryis an extra rim with its tire.

The invention consists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the accompanying drawings, in which--- Figure 1 is a sideelevation, in partial section. of the wheel. Fig. 2 is a sectional planview. Fig. 3 is a transverse section through the locking device. Figs. 4and show various forms of locking block.

represents an ordinary automobile wheel having a hole bored through thetelly for the i the regu ar air valvestem 2 of the pneun1at1c tire 3.

urpose of' inserting therethrough.

4 represents a removable rim which may be of any suitable construction,such as the ordinary elcncher type, or any separable types. The insidediameter'ofthis rim is larger by about one-fourth to two inches, more orless, than the outside diameter of the telly of the wheel. On the tellyof the wheel at the place where the valve-stem 2 is inserted, is a metalblock 5 of thickness about one-half the difference of these di an'u-tersfor the tire rim to rest upon. I may or may not have a. sphericaldepression in the block in which fits a small spherical projection (3from the inside of the tire rim, through the center of which a properaperture permits the projection of the tire valvestem 2. I

Diametrieally opposite the stem 2 and carried by the tire rim is a.projection, such as the pin 7, about one-half of an inch in diameter andof a length equal to or less than the difference in the diameters of therim and telly; and on the folly is a metal block 8 large enough for therequired strength, say the width equal to that of the telly and abouttwo to four inches in length of a re and of a thickness about. equal toone-half the ditl'ercnce in the aforementioned diameters of rim andfclly. This block 8 has a groove 9 of suitable. width for the traveltherethrough of the pin 7 projecting from the inside of the rim, andsaid groove being diagonal, hayonchfashion or otherwise, as representedin Figs. 4 and 5, the groove being open to one side of the block and itsinner end being in diametral line with the. hole for valve stem 2.

l'Vith the rim engaged with the telly at the two diametral pointsrepresented by the knob 6 and pin 7. it will be seensif the rim is heldin such a position that. its plane will form an angle with the plane ofthe wheel felly (the pin 7 being pushed through the groove 9 to itsseatwhich is situated diametrically opposite the valve-stem) the rim maybe turned on the knobt) and pin 7 as an axis into the plaiie of thewheel and locked there by suitable means shortly to bev described.sphericaLlmob 6 is to hold the rim against radialandnireumferontial-movement with regard to the folly and to protect thevalvestciu. The principal object of the pin 7 and groove 9 is to andalso in some shapes of groove. as Figs. 4- and againstcircumferentialmotion;

One object of the valve-stem guard against axial motion,

' members 11 on the rim.

tation on the pivots 6-7 mentioned.

and to permit of a quick connection and disconnection of the rim andfelly.

()n the periphery of the telly. and on each side of the half ofthe'wheel, cut by the axis through the hub, valw-sten'i and pin, thereis a plurality of segmental wedgeshaped blocks 10 extending crosswise orin the axial direction of the wheel. The greatest thickness of thesewedges is about the diti'ereiice of one-halt in the dimi'ieters. Thoseon the one halt side oi. the telly are made to wedge in one direction.and those on the other half in the other (lll0(:t.i(')ll. Similar, butopposite wedge-shaped blocks 11. and of about the same sizes. areiixed'integrally on the rim in such a way that. by rotating the plane ofthe rim on the axis through the valve-stem. hub and pin, to a pointwhere the planes of the rim and felly coincideor are parallel, thesewedge-shaped blocks will give rigid support." to the rim on the folly.The segmental wedges on the telly may have ridges 12 angular incross-section to fit. corresponding depressions 13 on the rim. or viceversa, and running in a direction substantially parallel with the wheelaxle for the purpose of additionally guarding against rotary movementsof the rim on the telly. The rim is thus rigidly held and stronglysupported on the telly against all possible movements and strains,excepting that of ro- Any suitable means may be employed to hold the rimagainst such motion, and lock it rigidly to the wheel.

I have shown one convenient. method of locking the rim in the plane ofthe wheel. in which one or more latch members or blocks 14. may beel'uployed; thcsc latches 'ireferably being countersunk into suitablemortises in the telly wedge members 10 and adapted to catch in thecorresponding undercut portion 16 in the outer series of wedge Byplacing the latches 14- in the wedges they are protected from theelements. Any suitable m ans may be employed to retract the latches soas to allow the rim to be dcmountcd. As here shown, a screw member 17suitably threaded in the fell y is cngageable with each latch member14,so that. by turning the screw 17 in one direction the latches arewithdrawn out of their mortises 16. leaving the rim tree. to turn on itspivots 6---7. Turning the screw 17 in the opposite direction thrusts thelatches outward to engage and lock the rim after the rim turns intooperative position in the plane of the wheel.

It is manifest or possible that the con struction herein specified maybe varied without departing from the principle of the invention, and Idesire it to be understood that the invention is not limited to any 1.The combination in a wheel, of an inner rim and an outer endlessremovable mm, the

latter having two diametrically opposed inwardly projecting pivotmembers removably fitting in sockets in the inner rim, and on whichpivots the outer rim is'turnable into and out. of. the plane of theinner rim.

3.. The combination in a wheel, of an inner rim and an outer endlessremovable rim,the latter having two diametrically opposed inwardlyprojecting pivot members reinovably fitting in sockets in the inner rim,and on which pivots the outer rim is turnable into and out of the planeof the inner rim, transversely positioned wedges on the inner rim, thoseon one half of the said rim bet-ween the-pivots pointing one way andthose on the other halt pointing the opposite way, and

corres mluling reacting wedges. on the outer rim.

P). The combination in a wheel, of an inner rim and an outer removablerim. an inflatable tire carried by the outer rim, and having an inwardlyprojecting nipplepassing through said outer rim and fitting a radialperforation in the inner rim, said outer rim having a globular inwardlyprojecting pivotal boss surrounding the nipple an-d fitting acorresponding globular socket in the inner rim. and the outer rim havingan inwardly extending radial projection in the diameter of the nippleand removably fitting a bayonet slot in the inner rim. said two rimsturnahle on the pivots provided by said projection and boss into and outof coincident planes.

4. The combination in a wheel. of an inner rim and an outer removablerim. an inflatable tire carried by the outer rim. and having an inwardlyproiecting nipple passing through said outer rim and fitting a radialperforation in ,the inner rim, said outer rim having a globular inwardlyprojecting pivotal boss surrounding the nipple and fitting acorresponding globular socket in the inner rim, and the outer. rimhaving an inwardly extending radial projection in the diameter oi thenipple and rcmovably fitting a bayo net slot in the inner rim. said tworims turnable on the pivots provided by =aid proicca 5. The combinationin a wheel. of an inner rim and an outer endless removable rim, thelatter having two diametrically opposed on the other half pointing theopposite Way, and corresponding eoaeting Wedges on the rim, the Wedgeson one rim having ridges running in a direction substantially parallelwith the Wheel axle, and the Wedges on the other rim havingcorresponding depressions.

6. The combination With a Wheel and its felly, of a rim havingdiametrically opposed pivotal supports on the felly, about which p1v0talsupports the rim is turnable into and out of the plane of the Wheel,oppositely positioned Wedges on the rim and. felly which coact to give,a rigid support to the rim when the latter is turned into the plane ofthe Wheel, and means for locking the rim when said Wedges are engaged.

7. The combination with a Wheeland its telly, of a rim havingdiametrically opposed pivotal supports. on the telly, about whichpivotal supports the rim is turnable into and out of the plane of theWheel, said rim having on one-half of its interior, Wedges pro jectingto one side of the rim, and having oppositely projecting Wedges on itsother half, and correspondingly positioned Wedges on the folly.

In testimony whereof I have hereunto set my hand in the presence of tWosubscribing 35 witi'iesses.

CHARLES B. LASTRETO. Witnesses:

RAYMOND A. LEONARD, CHARLES A. PENFIELD.

